Dr Peter Neumann, Queen's College, University of Oxford
Rubik’s Cube first came to Oxford in September 1978, brought by Professor Roger Penrose from the International Mathematical Congress that had been held in Budapest that summer. It has been enjoyed, analysed, solved, written about ever since. And last year one of the intriguing problems about it, how many moves does “God’s Algorithm” require? was solved. This Invariant Society lecture will focus on some of the interesting mathematics that is involved.